In electric power distribution and transmission system, coincident peak demand is the demand of individual customers or sub-systems that coincides (in time) with the peak demand of the whole system.
- Categories
- No categories
Article filed in 'Transmission System and Load Flow Analysis'
What are Coincident Peak Demand and Non-coincident Peak (NCP) Demand?
A Survey/Compilation of (Power) Transformer Percent Impedances (%Z)
Transformer impedance is one of the important information that is needed for the transmission line modeling for power flow, short circuit and other various power system simulations,
Filed in Transformers, Transmission System and Load Flow Analysis
What are the Electric Power System Ancillary Services?
Ancillary Services are support services in the power system, particularly, those which are necessary to support the transmission capacity and are essential in maintaining power quality, reliability and security of the grid.
The Backward Forward Sweep Load flow for Three-phase Unbalance Radial Distribution System
The algorithm for the backward-forward sweep power flow simulation for three-phase unbalance radial distribution system was formulated by D. Shirmohammadi and C. S. Cheng on their paper for the IEEE Transactions on Power Systems. The algorithm is quite simple since it was only based from the two basic laws in electrical engineering, the kirchhoff’ s […]
Filed in Algorithms and Computing, Transmission System and Load Flow Analysis
Step by Step Procedure to Run a Power Flow Simulation Using PSSE
The Siemens - PTI PSSE power flow simulator is a well known and reliable power flow simulation tool for simulating power systems of up to large scale in size. However, just like other sophisticated analysis tools, it’s hard to learn the basics of using it, specially, for the new user of the software.
The Advantages of DC Transmission over AC Transmission Systems
Currently, the transmission of electrical energy from bulk power generators all the way to household, commercial and industrial consumers is made mostly through high voltage alternating current (AC) transmission and distribution systems, and through a series of voltage transformations to reduce losses and minimize cost. Voltage levels used are of standard values.
A Methodology in Assessing the Impact of Wind Farm on the Power Transmission System
Unlike the conventional power generation plants that generates stable and more predictable amount of power, wind power generator output power is, more or less, unpredictable due to the intermittent wind speed
Filed in Renewable Energy, Transmission System and Load Flow Analysis
A C/C++ Program and Source Code for Computing Ybus and Zbus Matrices
Below is a C/C++ program and source code that computes the Ybus and Zbus of a given electrical network of any size.
Bus Type of a Bus with Both Generator and Loads Connected on It
Buses in the transmission system can be classified depending of the type of load that is connected into it.
Gauss Seidel Power Flow Simulation Program in PHP and MySQL
The main objective of online power flow, or sometimes, other people called it “load flow”, simulator is to provide a free and accessible simulation tool for power engineering students.
Filed in Codes and Scripts, Transmission System and Load Flow Analysis
Derivation of DC Power Flow
Given the Power Flow Equations:
We can derive the equation for DC power flow using the following simplifying approximations;
The Weaknesses of Backward Forward Sweep Load Flow Method for Electric Distribution Systems by Cheng and Shirmohammadi
Carol Cheng and Dariush Shirmohammadi proposed in their paper (IEEE Transactions on Power Systems, Vol. 10, No. 2, May 1995) a robust three phase power flow algorithm for radial and weakly meshed electric distribution system.